Tool for cutting the inside of plastic pipes



FIG. 1 is a front elevational view of a tool for cutting the inside of plastic pipes showing my new design, with the broken line showing of a fragmentary portion of a drill and pipe being for illustrative purposes only.

FIG. 2 is a perspective view thereof;

FIG. 3 is a top plan view of the upper cutter head as shown in FIG. 2; and

FIG. 4 is a cross sectional view taken along lines 4--4 of FIG. 3, with shaft portions broken away for ease of illustration. 

The ornamental design for a tool for cutting the inside of plastic pipes, substantially as shown and described. 